package com.liuya.db.sql;

/**
 * 空
 */
public class IsNullExpression implements Expression, java.io.Serializable  {
	private Column column;

	public String toSQL() {
		StringBuffer buf = new StringBuffer();
		buf.append(" ").append(column.toSQL()).append(" IS NULL ");
		return buf.toString();
	}

	public Column getColumn() {
		return column;
	}

	public void setColumn(Column column) {
		this.column = column;
	}
}
